求微机原理高手解答！ 求高手解答，微机原理
\u6709\u4e00\u9053\u5fae\u673a\u539f\u7406\u7684\u9898\uff0c\u6c42\u9ad8\u624b\u89e3\u7b54\uff01MOV AL,A ;AL=41H
MOV DX,C ;DX=1234H
XCHG DL,A ;DL=41H
MOV BX,OFFSET B ;BX=0002H
MOV CX,3[BX] ;CX='UP'=5550H
LEA BX,D ;BX=000EH
LES DI,E ;ES=1200H
LDS SI,E ;SI=459AH
\u3002\u3002\u3002\u3002\u3002\u3002\u3002\u3002
MOV CX,2 ；循环两次LOP:SHL AX,1 ；第一次：AX左移一位，AX=1111111111111110B，CF=1
；第二次：AX左移一位，AX=1111111111111100B，CF=1
RCL DX,1 ；第一次：DX带进位循环左移一位，DX=0000000000000011B
；第二次：DX带进位循环左移一位，DX=0000000000000111B
LOOP LOP
所以，上述程序段执行后，DX=0007H， AX=0FFFCH
绛旓細褰撳墠鏍堥《鐗╃悊鍦板潃涓猴細SS*16+SP=2010H*16+FE00H=20100H+FE00H=2FF00H,褰撴墽琛孭USH BX鎸囦护鍚庯紝SP-2锛屾晠鏍堥《鐗╃悊鍦板潃涓猴紱2FF00H-2H=2FEFEH 鏍堥《2涓瓧鑺傜殑鍐呭鏄疊X鐨勫唴瀹癸紝浣庡瓧鑺備负57H锛岄珮瀛楄妭涓34H銆傚嵆[2FEFEH]=57H,[2FEFFH]=34H ...
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